Lateral Load Transfer and Normal Forces Estimation for Vehicle Safety: Experimental Test

Knowledge of vehicle dynamics data is important for vehicle control systems that aim to enhance vehicle handling and passenger safety. This study introduces observers that estimate lateral load transfer and wheel-ground contact normal forces, commonly known as vertical forces. The proposed method is based on the dynamic response of a vehicle instrumented with cheap and currently available standard sensors. The estimation process is separated into 3 blocks: the first block serves to identify the vehicle's mass, the second block contains a linear observer whose main role is to estimate the roll angle and the one-side lateral transfer load, while in the third block linear and nonlinear models are compared for estimation of 4-wheel vertical forces. The different observers are based on a prediction/estimation filter. The performance of this concept is tested and compared with real experimental data acquired using the INRETS-MA (Institut National de Recherche sur les Transports et leur Securite - Departement Mecanismes d'Accidents) Laboratory car. Experimental results demonstrate the ability of this approach to provide accurate estimation, thus showing its potential as a practical low-cost solution for calculating normal forces.

  • Availability:
  • Supplemental Notes:
    • Abstract reprinted with permission from Taylor and Francis
  • Authors:
    • Lechner, Daniel
    • Charara, A
    • Doumiati, M
    • Victorino, A
  • Publication Date: 2009-12

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01146446
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 11 2009 3:14PM